|Date|Competition|Home team|Score|Away team|Score|
|---|---|---|---|---|---|
|16 October 2004|Powergen Cup|Bedford||Tabard||
|15 February 2005|National Division One|Bedford|26|Otley|13|
|19 February 2005|National Division One|Bedford|16|London Welsh|17|
|26 February 2005|National Division One|Sedgley Park|12|Bedford|23|
|12 March 2005|National Division One|Bedford|23|Cornish Pirates|28|
|2 April 2005|National Division One|Bedford|39|Plymouth Albion|21|
|9 April 2005|National Division One|Birmingham Solihull|18|Bedford|29|

Question: bedford scored ______ more points than plymouth albion on the 2 april 2005 game.
Answer: 18